彼の無罪を

his innocence

→ 彼
phrase Rare #34,378
his innocence 彼の means “his,” 無罪 means “innocence” or “not guilty,” and を marks the phrase as the object of a following verb, such as “prove,” “claim,” or “be convinced of.”
JA: 裁判官は彼の無罪を認めた。
EN: The judge recognized his innocence.

弁護士は彼の無罪を強く主張した

The lawyer strongly insisted on his innocence.

私達はみんな彼の無罪を確信している

We are all convinced of his innocence.

親族達は彼の無罪を確信していた

His relatives were convinced of his innocence.

この事実は彼の無罪を証明している

This fact proves his innocence.

彼の無罪を最後まで主張する

I will maintain his innocence to the very end.